Cancer Screening in Orange County: Advanced Galleri Testing
WHY CHOOSE GALLERI TESTING?
At Newport Beach Urgent Care, we offer the Galleri multi-cancer early detection test. Most life-threatening cancers are found too late; Galleri changes that by detecting signals for 50+ cancer types—like pancreatic and liver—via one simple blood draw. It analyzes cell-free DNA to find cancer early when it's most treatable. Proactive care is vital for those 50+. We'll help you determine if this test is right for you.
Most cancers that become life-threatening share one thing in common: they were found too late. For decades, effective cancer screening has been limited to a small handful of cancer types, leaving the vast majority undetectable until symptoms appear and treatment becomes significantly more complex.
For Orange County residents who want to take a more proactive approach to their health, that gap has been a real concern.
Newport Beach Urgent Care is changing that by offering the Galleri multi-cancer early detection test, a next-generation screening tool that can detect signals shared by more than 50 types of cancer through a simple blood draw.
If you've been looking for more comprehensive cancer screening options in Orange County, we’re here to help you learn how this test works and whether it might be right for you.
What Is Multi-Cancer Early Detection and How Does It Work
The Science Behind Galleri
The Galleri test was developed by GRAIL, Inc. and works by analyzing cell-free DNA in a patient's bloodstream. As cells grow and die throughout their natural lifecycle, they release DNA into the blood.
Cancer cells release DNA with distinct methylation patterns that differ from those of healthy cells. The Galleri test uses machine learning and advanced sequencing technology to identify those differences, detecting a cancer signal and, if one is found, predicting where in the body it originated.
This approach is different from anything that has come before it in routine preventive care. Rather than testing for one cancer at a time, the Galleri test screens for signals associated with more than 50 cancer types in a single blood draw.
For patients who have been looking for a more complete approach to cancer screening in Orange County, this represents a meaningful step forward in proactive health management.
How Galleri Differs from Standard Cancer Blood Tests
Many patients are familiar with traditional cancer marker tests, like PSA for prostate cancer or CA-125 for ovarian cancer. Those tests screen for biomarkers tied to a single cancer type.
The Galleri test works differently, analyzing methylation patterns in cell-free DNA to screen for signals associated with more than 50 cancer types at once. It is a fundamentally different technology designed to address the detection gaps that single-marker tests leave behind.
Why Early Detection Changes Outcomes
The case for early detection is straightforward: cancer found early is generally more treatable. When cancer is caught at an early stage, patients often have more treatment options available and a greater likelihood of successful outcomes.
The challenge has always been that most cancers develop without producing symptoms patients can notice, meaning many diagnoses come only after the disease has progressed significantly.
At Newport Beach Urgent Care, we offer the Galleri test as part of our broader commitment to preventive and proactive care. Adding a multi-cancer screening tool to our services means our patients can take a meaningful step toward catching potential issues earlier, when intervention is most impactful.
Our team is here to walk you through whether this test is appropriate for your age, health history, and risk profile.
The Clinical Evidence Behind the Galleri Test
What the PATHFINDER Studies Found
The Galleri test has been backed by a robust body of clinical research. The PATHFINDER 2 study, the largest interventional multi-cancer early detection study conducted in the United States to date, enrolled 35,878 adults aged 50 and older with no clinical suspicion of cancer.
Results showed that adding Galleri to standard-of-care screenings yielded a more than seven-fold increase in the overall cancer detection rate, with a specificity of 99.6% and a false positive rate of only 0.4%.
Among the most meaningful findings was the test's ability to identify where in the body a cancer signal is coming from.
The PATHFINDER 2 results showed that the Galleri test correctly identified the cancer signal origin 92% of the time, which is critical for guiding efficient follow-up diagnostics rather than requiring extensive whole-body imaging.
Real-World Performance Data
Clinical trial results are valuable, but real-world data adds another layer of confidence. A 2025 study published in Nature Communications analyzed Galleri's performance across more than 111,000 individuals.
The cancer signal detection rate was consistent with prior clinical studies, and the test correctly predicted the cancer signal origin in 87% of confirmed diagnoses, spanning 32 distinct cancer types.
The empirical positive predictive value came in at 49.4%, meaning nearly half of all positive results led to a confirmed cancer diagnosis.
For patients considering multi-cancer screening in Orange County, this level of real-world validation means the Galleri test is not simply a theoretical advance. It is a clinically supported tool performing consistently across large populations of actual patients.
What to Expect When You Get the Galleri Test at Our Clinic
Who Should Consider This Test
The Galleri test is recommended for adults with an elevated risk for cancer, particularly those aged 50 and older. Age is one of the most significant cancer risk factors, with adults in this group facing a roughly 13 times greater risk of developing cancer compared to younger adults.
The test is not recommended for individuals who are pregnant, under 21 years of age, or currently undergoing active cancer treatment.
It is important to understand that the Galleri test is a screening tool, not a diagnostic test. A result of "no cancer signal detected" does not rule out cancer entirely, as the test does not detect every possible cancer type.
Conversely, a result of "cancer signal detected" requires follow-up with a healthcare provider and additional diagnostic testing to confirm whether cancer is present. Our team is experienced in helping patients understand and navigate their results, and we do not leave patients to interpret findings on their own.
The Testing Process from Start to Finish
One of the practical advantages of the Galleri test is how easily it integrates into a routine wellness or preventive care visit. The test requires only a standard blood draw, which can be completed during the same appointment as an annual physical exam or other scheduled visit at our clinic.
There is no special preparation required beforehand, and the process adds minimal time to an existing appointment.
Once your blood sample is collected, it is sent to GRAIL's CLIA-certified and College of American Pathologists-accredited laboratory for analysis. Results are typically returned within about two weeks and are reviewed with you by a provider at Newport Beach Urgent Care.
It is important to understand that the Galleri test is a screening tool, not a diagnostic test. If a cancer signal is detected, the test can predict where in the body the signal originated with approximately 90% accuracy, but a confirmed cancer diagnosis still requires follow-up imaging, biopsy, or other medically established procedures.
Our team will explain what your results mean, answer your questions, and help determine whether any follow-up steps are appropriate.
How Galleri Fits Into a Complete Cancer Screening Plan
Complementing, Not Replacing, Standard Screenings
It is worth being clear about something the research consistently confirms: the Galleri test is designed to work alongside existing cancer screenings, not replace them.
Mammograms, colonoscopies, Pap tests, PSA testing, and low-dose CT scans for high-risk lung cancer patients remain important tools and should be continued as recommended by your healthcare provider. The value of the Galleri test lies in its ability to screen for the many cancer types that currently have no standard early detection option.
Of the more than 50 cancer types the Galleri test can screen for, the majority fall outside the scope of any currently recommended standard screening protocol. Pancreatic, ovarian, esophageal, and liver cancers are among the deadliest in part because they are rarely detected early.
Adding Galleri to a patient's annual preventive care routine provides a screening layer that simply did not exist before.
Building a Preventive Care Routine in Orange County
Preventive care is most effective when it is consistent. For adults approaching or past the age of 50, building a health maintenance routine that includes appropriate screenings, annual physical exams, lab work, and tools like the Galleri test is one of the most proactive investments they can make in their long-term wellbeing.
Newport Beach Urgent Care makes that easy by offering all of these services in a single, convenient location.
Our clinic is open seven days a week with walk-in availability and same-day appointments, so accessing preventive care does not require extensive planning or long waits.
Whether you are looking to schedule your first Galleri test or want to discuss whether it is appropriate given your personal health history, our team is here to help you take that step.
Galleri Testing in Action
The PATHFINDER Study Published in The Lancet
The original PATHFINDER study, published in The Lancet in 2023, provided the first large-scale clinical implementation evidence for the Galleri test. The study found that adding Galleri to standard-of-care screening approximately doubled the number of cancers identified in its patient population.
The study was a prospective cohort design, meaning participants were followed forward over time under real clinical conditions, rather than analyzed retrospectively. Results are publicly available and peer-reviewed at The Lancet.
Newport Beach Urgent Care's In-Office Galleri Testing Program
Newport Beach Urgent Care offers the Galleri test directly to patients at our clinic at 360 San Miguel Drive, Suite 107. The test is incorporated into wellness visits and can be accessed through a simple blood draw without requiring a referral or a specialist appointment.
Information about our cancer screening services is available directly on our cancer screening page, where patients can also request an appointment or learn more about what the test involves before their visit.
Take Control of Your Cancer Screening in Orange County Today
Most people think of cancer as something that happens to someone else, until it doesn't. The reality is that many of the cancers with the worst outcomes are the ones that go undetected the longest, simply because no standard screening test exists for them.
The Galleri multi-cancer early detection test changes that equation by giving patients and providers a practical, evidence-backed tool for identifying cancer signals earlier.
At Newport Beach Urgent Care, we believe preventive care should be accessible, not complicated. Our team is here to help Orange County residents understand whether the Galleri test is right for them, walk through what the results mean, and provide guidance on next steps.
If you are 50 or older, or if you have risk factors that make cancer screening a priority, we encourage you to contact us today and ask about adding the Galleri test to your next visit.
FREQUENTLY ASKED QUESTIONS
The test requires only a standard blood draw, which takes just a few minutes. It can be incorporated into an existing wellness visit at our clinic and requires no special preparation. Results are typically returned within approximately two weeks and reviewed with you by one of our providers.
